<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace lemon\widgets;

use yii\bootstrap4\Alert as BootstrapAlert;
use yii\bootstrap4\Widget;

/**
 * Alert widget renders a message from session flash for AdminLTE alerts. All flash messages are displayed
 * in the sequence they were assigned using setFlash. You can set message as following:
 *
 * ```php
 * \Yii::$app->getSession()->setFlash('error', '<b>Alert!</b> Danger alert preview. This alert is dismissable.');
 * ```
 *
 * Multiple messages could be set as follows:
 *
 * ```php
 * \Yii::$app->getSession()->setFlash('error', ['Error 1', 'Error 2']);
 * ```
 *
 * @author Evgeniy Tkachenko <et.coder@gmail.com>
 */
class Alert extends Widget
{
	/**
	 * @var array the alert types configuration for the flash messages.
	 * This array is setup as $key => $value, where:
	 * - $key is the name of the session flash variable
	 * - $value is the array:
	 *	   - class of alert type (i.e. danger, success, info, warning)
	 *	   - icon for alert AdminLTE
	 */
	public $alertTypes = [
		'error' => [
			'class' => 'alert-danger',
			'icon' => '<i class="icon fa fa-ban"></i>',
		],
		'danger' => [
			'class' => 'alert-danger',
			'icon' => '<i class="icon fa fa-ban"></i>',
		],
		'success' => [
			'class' => 'alert-success',
			'icon' => '<i class="icon fa fa-check"></i>',
		],
		'info' => [
			'class' => 'alert-info',
			'icon' => '<i class="icon fa fa-info"></i>',
		],
		'warning' => [
			'class' => 'alert-warning',
			'icon' => '<i class="icon fa fa-warning"></i>',
		],
	];

	/**
	 * @var array the options for rendering the close button tag.
	 */
	public $closeButton = [];


	/**
	 * @var boolean whether to removed flash messages during AJAX requests
	 */
	public $isAjaxRemoveFlash = true;
	
	/**
	 * Initializes the widget.
	 * This method will register the bootstrap asset bundle. If you override this method,
	 * make sure you call the parent implementation first.
	 */
	public function init(){
		parent::init();

		$session = \Yii::$app->getSession();
		$flashes = $session->getAllFlashes();
		$appendCss = isset($this->options['class']) ? ' ' . $this->options['class'] : '';

		foreach ($flashes as $type => $data) {
			if (isset($this->alertTypes[$type])) {
				$data = (array) $data;
				foreach ($data as $message) {

					$this->options['class'] = $this->alertTypes[$type]['class'] . $appendCss;
					$this->options['id'] = $this->getId() . '-' . $type;

					echo BootstrapAlert::widget([
							'body' => $this->alertTypes[$type]['icon'] . $message,
							'closeButton' => $this->closeButton,
							'options' => $this->options,
						]);
				}
				if ($this->isAjaxRemoveFlash && !\Yii::$app->request->isAjax) {
					$session->removeFlash($type);
				}
			}
		}
	}
}
